Wendy2 wrote:
No, I do not have Tiff confused with Raw. I understand that Raw is unchanged. I am talking about how to save the files.
Raw is not an image but lots of information, far more than a Jpeg file. After editing, if you save your file to Tiff, you retain all the steps you took in editing and can go back and make changes to those edits. If you edit a file and save it as a Jpeg, you lose all the steps you took in your editing process and can not tweak any of the previous edits.
Sorry, but the highlighted statement is not correct. When you edit a raw file, whether you save to TIFF or JPEG is immaterial. You are confusing the LOSSY (compressed) saves that happen to a JPEG file with the LOSSLESS (uncompressed) format of a TIFF file.
An edited raw file will always be re-editable, since the changes do not overwrite original data, but are saved as a sidecar or other mechanism.
UPDATE:
Ok, I've gone back over your original statement, my first reply, your response, and now my 2nd response. I am completely puzzled by your statement that TIFF files somehow retain all the editing actions that you make on them.
Are you saying that you can edit a raw file, make a bunch of changes to it, save the edited raw as a TIFF file, and then open the TIFF file and be able to UNDO the changes that were made while you were editing the raw file? That doesn't make any sense.
Or are you saying that you can open a TIFF file, make a bunch of changes, save it, then re-open it and undo those changes? Huh? I've never heard of this capability. I know all about the ability to UNDO in varying amounts, during a SINGLE session with various editors, but I've never heard of the ability to 'store' edits to a TIFF file and then re-open it, ostensibly days later, and UNDO those individual editing actions.
Now, it may be that your P/P program somehow saves actions done against a TIFF file, so that you can reopen that same file later and undo those actions, but that's a function of the P/P software, not a TIFF file generically.
I do not use Photoshop or any of its derivatives so perhaps that's where this confusion comes in?